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| All Patents in class 123/71V | |||||
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| Number | Date | Patentee | Title | Type | |
| 634,529 | Oct. 10, 1899 | A. Lee | Gas Engine | gas and gasoline engines | |
| 642,043 | Jan. 23, 1900 | W.A. Kope | Gas Engine | gas and gasoline engines | |
| 651,780 | Jun. 12, 1900 | H.A. Dawson, H.T. Dawson | Internal-Combustion Motor | gas and gasoline engines | |
| 859,501 | Jul. 09, 1907 | F. Lamplough | Internal Combustion Engine | internal combustion engines | |